Q1
Q1 What is the fundamental purpose of a computer network?
Sharing resources
Storing data
Performing calculations
Enhancing security
Q2
Q2 Which topology does the Internet resemble?
Ring
Bus
Star
Mesh
Q3
Q3 What type of network covers a large geographical area, like a city, country, or the world?
LAN
MAN
WAN
PAN
Q4
Q4 Which device is used to connect different network segments in a computer network?
Repeater
Router
Bridge
Modem
Q5
Q5 What protocol is commonly used for transmitting web pages over the internet?
SMTP
FTP
HTTP
SNMP
Q6
Q6 Which layer of the OSI model ensures the error-free transmission of data?
Physical Layer
Data Link Layer
Network Layer
Transport Layer
Q7
Q7 In a computer network, what is the main function of the application layer?
To provide network services to the applications
To transmit data between network devices
To package data for transfer
To route data between networks
Q8
Q8 Which command can be used to view the current IP configuration of a device?
ipconfig
ifconfig
Both ipconfig and ifconfig
netstat
Q9
Q9 What is the result of executing the ping localhost command?
It sends ICMP echo requests to the local machine
It configures the local machine's IP address
It displays the routing table
It clears the DNS cache
Q10
Q10 If a computer is unable to access the Internet, but can communicate with local network devices, what should be checked first?
Router configuration
Cable connections
Local firewall settings
DNS settings
Q11
Q11 A computer can ping IP addresses but not domain names.
What is likely the issue?
IP conflict
Router failure
DNS misconfiguration
Faulty Ethernet cable
Q12
Q12 Which layer of the OSI model is responsible for establishing, managing, and terminating sessions between applications?
Session Layer
Transport Layer
Application Layer
Presentation Layer
Q13
Q13 What is the primary function of the Network Layer in the OSI model?
To provide data routing paths for network communication
To format data
To establish connections
To encode and decode data
Q14
Q14 In the TCP/IP model, which layer corresponds to the OSI model's Physical and Data Link layers?
Application
Transport
Internet
Network Interface
Q15
Q15 The process of encapsulation involves data moving from which layer to which layer?
Application to Physical
Physical to Application
Transport to Network
Network to Transport
Q16
Q16 Which OSI layer is responsible for error detection and correction at the destination?
Transport
Network
Data Link
Physical
Q17
Q17 What does the TCP/IP model's Internet layer do?
Manages end-to-end data communication sessions
Routes packets across networks
Formats data packets
Encodes and decodes data
Q18
Q18 Which protocol operates at the Transport Layer of the OSI model to ensure reliable communication?
ICMP
IP
TCP
UDP
Q19
Q19 How does the Presentation Layer of the OSI model differ from the Application Layer?
It is responsible for session management
It deals with syntax and semantics of the information exchanged
It provides encryption and compression
It is not implemented in the TCP/IP model
Q20
Q20 What feature distinguishes TCP from UDP at the Transport Layer?
TCP is faster than UDP
TCP and UDP use different port numbers
TCP is connection-oriented while UDP is not
TCP uses IP but UDP does not
Q21
Q21 Which command can be used to display the current TCP/IP network configuration?
ipconfig /all
netstat -r
arp -a
tracert
Q22
Q22 What does the netstat command do?
Displays network connections, routing tables, and statistics
Configures network interfaces
Tests connectivity to a host
Manages firewall settings
Q23
Q23 Which command is used to test connectivity to a specific IP address and trace the path the packets take?
ping
arp
tracert
nslookup
Q24
Q24 A device is unable to connect to any network. Which OSI layer should be investigated first?
Application
Presentation
Network
Physical
Q25
Q25 If a computer can connect to local devices but not to the Internet, what might be misconfigured?
IP address
Subnet mask
Default gateway
MAC address
Q26
Q26 A web application can send data but cannot receive.
What layer could be malfunctioning?
Application
Session
Transport
Presentation
Q27
Q27 What is the primary function of the MAC (Media Access Control) sublayer?
Frame delimiting
Error detection
Controlling access to the physical medium
Physical addressing
Q28
Q28 What is the standard Ethernet frame size for most networks?
64 bytes to 1518 bytes
128 bytes to 1024 bytes
1500 bytes to 2000 bytes
100 bytes to 1500 bytes
Q29
Q29 In Ethernet networks, what is the purpose of the collision detection mechanism?
To encrypt data
To compress data
To detect and manage when two devices try to send data simultaneously
To prioritize data
Q30
Q30 Which Ethernet standard provides a speed of 1 Gbps?
10BaseT
100BaseTX
1000BaseT
10GBaseT
